TI Watchdog Timer (WDT) Controller for OMAP

Required properties:
- compatible : "ti,omap3-wdt" for OMAP3 or "ti,omap4-wdt" for OMAP4
- ti,hwmods : Name of the hwmod associated to the WDT

Optional properties:
- timeout-sec : default watchdog timeout in seconds

Examples:

wdt2: wdt@4a314000 {
	compatible = "ti,omap4-wdt", "ti,omap3-wdt";
	ti,hwmods = "wd_timer2";
};